/Engine/Source/Editor/UnrealEd/Public/Kismet2/BlueprintEditorUtils.h
Find the index of a variable first declared in this blueprint or its parents. Returns INDEX_NONE if not found.
The index of the variable, or INDEX_NONE if it wasn't introduced in this blueprint.
static int32 FindNewVariableIndexAndBlueprint ( [UBlueprint](API\Runtime\Engine\Engine\UBlueprint) * InBlueprint, [FName](API\Runtime\Core\UObject\FName) InName, [UBlueprint](API\Runtime\Engine\Engine\UBlueprint) *& OutFoundBlueprint )